338 SHERMAN

jeff z

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Mar 10, 2019
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somewhere in the US
Hmm… I’ve never heard of a twist being too fast. Tell me more?
I'm probably showing my inexperience. but I thought you could spin a bullet too fast..
I'm running a 338 sherman max with a 10 twist, and it does shoot 200's and 225's very well. Both mono's and cup core.
I have a longer FB than the original reamer ( .100 ) over. So I mite have to jump them a mile just to seat them far enough.
It just sounds like fun to shoot a .338 at 3400 fps
 

wilkup

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Dec 2, 2013
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1,351
Location
Cle Elum, WA
I'm probably showing my inexperience. but I thought you could spin a bullet too fast..
I'm running a 338 sherman max with a 10 twist, and it does shoot 200's and 225's very well. Both mono's and cup core.
I have a longer FB than the original reamer ( .100 ) over. So I mite have to jump them a mile just to seat them far enough.
It just sounds like fun to shoot a .338 at 3400 fps
Sure does 🤠
I would think a mono wouldn’t come apart at higher RPMs, but maybe a traditional, cup and core type…?
I’m just considering the physics of such a possibility. Faster twist and higher velocity produce a higher RPM, which in theory could potentially tear a bullet apart. Being of solid copper construction, I’d think the threshold for such an occurrence would require significant force.
 

jeff z

Well-Known Member
LRH Team Member
Joined
Mar 10, 2019
Messages
120
Location
somewhere in the US
Sure does 🤠
I would think a mono wouldn’t come apart at higher RPMs, but maybe a traditional, cup and core type…?
I’m just considering the physics of such a possibility. Faster twist and higher velocity produce a higher RPM, which in theory could potentially tear a bullet apart. Being of solid copper construction, I’d think the threshold for such an occurrence would require significant force.
I'm just imagining the report back on a 338 mono hitting an animal at say 3250 impact velocity.
 
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